tag:blogger.com,1999:blog-2527540641707613767.post6530556312972365706..comments2023-05-21T03:23:32.180-07:00Comments on Keeping British Marine Life: LightingUnknownnoreply@blogger.comBlogger1125tag:blogger.com,1999:blog-2527540641707613767.post-21240512251537165782010-09-07T14:05:59.312-07:002010-09-07T14:05:59.312-07:00Any idea Gary of the light levels that you have e....Any idea Gary of the light levels that you have e.g. lux at the water surface and/or tank bottom. Reds can get away with low light but greens like Ulva spp. need high light levels and like fast water flow rates - the Ulva that grows most prolifically in my tub, grows on the filter outflow pipe, and streams in the currents produced from this up to 70 cm in length! I use a 70 W halide lamp (around 5000K) which gives me around 10 to 15,000 Lux at water surface with lamp 20 cm from water surface.Recyclinghttps://www.blogger.com/profile/18110352740077560656noreply@blogger.com